<!DOCTYPE HTML>
<html>
<head><meta charset="utf-8"></head>
<body>
<b>Frame 1</b><br/>
<a href="#"" id="testlink" onclick="parent.frames[1].frames[0].location='http://test2.mochi.test:8888/tests/docshell/test/navigation/file_triggeringprincipal_subframe_nav.html'">click me</a>

<script type="application/javascript">
  // make sure to set document.domain to the same domain as the subframe
  window.onload = function() {
    document.domain = 'mochi.test';
  };
  window.addEventListener('message', receiveMessage, false);
  function receiveMessage(event) {
    // make sure to get the right start command, otherwise
    // let the parent know and fail the test
    if (event.data.start !== 'startTest') {
      window.removeEventListener("message", receiveMessage, false);
      window.parent.postMessage({triggeringPrincipalURI: 'false'}, '*');
    }
    // click the link to navigate the subframe
    document.getElementById('testlink').click();
  }
</script>

</body>
</html>
